2021-03-27 19:21:44

by Ray Chi

Subject: [PATCH] dt-bindings: usb: dwc3: Add usb-psy-name string

This commit adds documentation for usb-psy-name string.
The string will use to find the power supply interface.
And then, DWC3 can use the interface to control charing
current with USB state and USB speed.

Signed-off-by: Ray Chi <[email protected]>
---
Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index 2247da77eac1..ad62f4552fad 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -301,6 +301,13 @@ properties:
items:
enum: [1, 4, 8, 16, 32, 64, 128, 256]

+ usb-psy-name:
+ description:
+ Contains the name for power supply interface. To follow
+ BC1.2 specification, DWC3 could use power supply interface
+ to control current with corresponding USB state and USB speed.
+ minItems: 1
+
unevaluatedProperties: false

required:
--
2.31.0.291.g576ba9dcdaf-goog

2021-03-30 15:14:36

by Rob Herring

Subject: Re: [PATCH] dt-bindings: usb: dwc3: Add usb-psy-name string

On Sun, Mar 28, 2021 at 03:15:20AM +0800, Ray Chi wrote:
> This commit adds documentation for usb-psy-name string.
> The string will use to find the power supply interface.
> And then, DWC3 can use the interface to control charing
> current with USB state and USB speed.

Why is this DWC3 specific?

Where does it find the power supply interface?

>
> Signed-off-by: Ray Chi <[email protected]>
> ---
> Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> index 2247da77eac1..ad62f4552fad 100644
> --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> @@ -301,6 +301,13 @@ properties:
> items:
> enum: [1, 4, 8, 16, 32, 64, 128, 256]
>
> + usb-psy-name:
> + description:
> + Contains the name for power supply interface. To follow
> + BC1.2 specification, DWC3 could use power supply interface
> + to control current with corresponding USB state and USB speed.
> + minItems: 1
> +
> unevaluatedProperties: false
>
> required:
> --
> 2.31.0.291.g576ba9dcdaf-goog
>